U.S. and Iranian negotiators have reached a 60-day memorandum of understanding to extend the ceasefire and launch nuclear talks, but President Donald Trump has not yet given final approval, Axios reported Thursday, citing two U.S. officials and a regional source involved in the mediation.

The reported deal would mark the most significant diplomatic breakthrough since the U.S.-Iran war began, but it would not be a final nuclear agreement. One U.S. official told Axios that Trump was briefed on the terms but wanted more time before signing off. “The president relayed to the mediators that he wants a couple of days to think about it,” the official said.

According to Axios, the MOU would require unrestricted shipping through the Strait of Hormuz, including no tolls and no harassment of vessels. Iran would also be required to remove all mines from the strait within 30 days, while the U.S. naval blockade would be lifted in proportion to the return of commercial shipping.

The agreement would include an Iranian commitment not to pursue a nuclear weapon, while leaving the hardest issues for the 60-day negotiating window. Those talks would focus first on how to dispose of Iran’s highly enriched uranium and how to address Iranian enrichment, alongside discussions on sanctions relief, frozen Iranian funds and a mechanism for humanitarian goods.

“This is an agreement to get everybody to the table. We will work out the details in the negotiations,” one U.S. official told Axios. The report comes after several previous moments when Trump advisers believed a deal was close, only for talks to stall.

The diplomatic push is unfolding alongside continued military tension in the Strait of Hormuz, where the U.S. and Iran traded fresh strikes in recent days. Israel has said any final deal must remove the Iranian nuclear threat, including dismantling enrichment facilities and removing enriched nuclear material from Iranian territory.